Finger Joint Driving Device Thickness Reduction
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Solution Overview
Problem
Conventional finger joint driving devices are thick due to their design, limiting hand movement when trying to fit into narrow spaces, as they are mounted on the back of the hand and obstruct the hand's ability to be inserted into tight gaps.
Innovation Solution
A finger joint driving device with a reduced thickness design, where members are positioned on the hand in a way that allows for bending and stretching of finger joints without the need for a slide bracket on the back of the hand, utilizing a configuration with turnable members and a piezoelectric driving unit to minimize thickness and enhance mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a slide bracket is disposed on the back of the hand to enable finger joint bending and stretching, then the finger joint driving device can assist finger movement, but the device becomes thick and limits hand movement into narrow spaces
Solution Approach 1:
The patent repositions the driving device from the back of the hand to the palm side, utilizing the three-dimensional space of the hand more effectively. This dimensional relocation allows the device to maintain its functional components while reducing the protrusion thickness that limits hand insertion into narrow spaces.
Solution Approach 2:
The device is divided into multiple members (first member on palm, second member turnably connected, third member on finger end) that work together through relative movement. This segmentation allows each component to be optimized for its specific function while the overall structure maintains a compact profile suitable for narrow space insertion.
2Reliability
If the device is made thick to accommodate the slide bracket mechanism, then the finger joint driving function is achieved, but the hand cannot be put into narrow gaps
Solution Approach 1:
The patent employs a dynamic mechanism where the first member (on palm) and fourth member (on finger end) can relatively approach and separate, and intermediate members turnably connect. This dynamic structure allows the device to maintain its driving function while adapting its profile to fit into narrow spaces, as the components can move relative to each other rather than requiring constant thick spacing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The reduced thickness of the device allows for greater hand mobility, enabling the hand to be inserted into narrower spaces without the limitations imposed by thicker devices, while still effectively assisting in bending and stretching finger joints.
Implementation Method 1
the first driving unit includes a piezoelectric element
Data Source
AI summary
A finger joint driving device is provided on a hand and causes a finger joint to be turned. The finger joint driving device includes a first base portion that is mounted on the hand, a first link portion that is turnably provided on the first base portion, a second link portion that is turnably provided on the first link portion, a second base portion that is mounted on the end side of a finger from the first base portion in the hand and is provided on the second link portion so as to relatively approach with respect to and to be separated from the first base portion, and a driving unit that drives the second link portion to be turned.